Instrument assembly for use in knee joint replacement surgery
US8998917B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 21, 2006 |
| Grant date | Apr 7, 2015 |
| Priority date | — |
| Expiry date | Nov 22, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/061
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An instrument assembly for use in knee joint replacement surgery is provided including a base instrument having a tibial plate, a femoral plate, a tibial arm having a plate end and a control end, a femoral arm having a plate end and a control end, wherein the femoral plate is rotatably fastened to the plate end of the femoral arm. The assembly also includes a distractor mechanism configured to act between the tibial arm and the femoral arm at a point between their respective plate ends and control ends by which the distance between the plate ends of the arms can be adjusted and an ancillary instrument mountable on the base instrument and configured such that the position of the ancillary instrument relative to the tibial plate is fixed during subsequent steps in the knee replacement procedure, while the knee joint is distracted as a result of forces applied across the joint between the tibial plate and the femoral plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.